Proceedings of the 2023 9th International Conference on Architectural, Civil and Hydraulic Engineering (ICACHE 2023)

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Effect of side chain molecular weight on properties of slump retaining poly carboxylic acid water reducer

Authors
Longjie Zhou1, *
1Xiamen Key Laboratory of Engineering Additives, KZJ New Material Group Co. Ltd, Xiamen, Fujian, 361101, China
*Corresponding author. Email: 1035894625@qq.com
Corresponding Author
Longjie Zhou
Available Online 30 December 2023.
DOI
10.2991/978-94-6463-336-8_64How to use a DOI?
Keywords
side chain molecular weight; slump retention; adsorption; concrete
Abstract

Slump retaining polycarboxylic acid superplasticizers with different side chain molecular weight were synthesized by using ethylene glycol vinyl polyoxyethylene ether monomers with different molecular weight by different ester to ether ratio and the same ester to ether ratio. Gel permeation chromatography and total organic carbon analyzer were used for structural characterization and adsorption tests to investigate the effects of slump retaining properties of concrete. The results showed that different ester to ether ratio and side chain molecular weight had different effects on PCE molecular weight and molecular weight distribution. At the initial stage of adsorption, the adsorption capacity first increases and then decreases with the increase of side chain molecular weight. In the later stage of adsorption, the adsorption capacity increases first and then decreases with the increase of ester to ether ratio. When the ratio of ester to ether and the molecular weight of side chain increase, the slump retention performance increases first and then decreases. With the increase of side chain molecular weight, the slump retention performance of the same ester to ether ratio increases first and then decreases.

Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2023 9th International Conference on Architectural, Civil and Hydraulic Engineering (ICACHE 2023)
Series
Advances in Engineering Research
Publication Date
30 December 2023
ISBN
978-94-6463-336-8
ISSN
2352-5401
DOI
10.2991/978-94-6463-336-8_64How to use a DOI?
Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Longjie Zhou
PY  - 2023
DA  - 2023/12/30
TI  - Effect of side chain molecular weight on properties of slump retaining poly carboxylic acid water reducer
BT  - Proceedings of the 2023 9th International Conference on Architectural, Civil and Hydraulic Engineering (ICACHE 2023)
PB  - Atlantis Press
SP  - 549
EP  - 556
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-336-8_64
DO  - 10.2991/978-94-6463-336-8_64
ID  - Zhou2023
ER  -